//
//  AppDelegate.m
//  07--UITabBarController
//
//  Created by 冀永金 on 16/7/22.
//  Copyright © 2016年 冀永金. All rights reserved.
//

#import "AppDelegate.h"
#import "ViewController.h"
#import "VCOfScecond.h"
#import "VCOfThird.h"

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    [self createTabBarController];
    // Override point for customization after application launch.
    return YES;
}
- (void)createTabBarController {
    // UITabBarController 标签控制器
    // 主要管理没层级关系的视图控制器
    // 1.viewControllers 所有被管理的视图控制器，都在这个数组中
    // 可以通过setter 方法形式 去赋值
    // tabBar的高度  （49）
    
    UITabBarController *root = [[UITabBarController alloc]init];
    self.window.rootViewController = root;
    root.tabBar.translucent = NO;
    root.viewControllers = [self createViewControllers];
    
}
- (NSArray<UIViewController *> *)createViewControllers {
    NSMutableArray *marrOfVCs = [NSMutableArray array];
    ViewController *vc = [[ViewController alloc]init];
    UINavigationController *item = [[UINavigationController alloc]initWithRootViewController:vc];
    vc.view.backgroundColor = [UIColor redColor];
    vc.navigationItem.title = @"呵呵";
    item.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemMore tag:100];
    // 角标 badgeValue
    item.tabBarItem.badgeValue = @"未读";
    // barTintColor bar 的背景颜色
    // tinColor bar元素上的颜色
    
    [marrOfVCs addObject:item];
   VCOfScecond *vc2 = [[VCOfScecond alloc]init];
    UINavigationController *item2 = [[UINavigationController alloc]initWithRootViewController:vc2];
    item2.view.backgroundColor = [UIColor yellowColor];
    item2.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemSearch tag:200];
    [marrOfVCs addObject:item2];
    VCOfThird *vc3 = [[VCOfThird alloc]init];
    UINavigationController *item3 = [[UINavigationController alloc]initWithRootViewController:vc3];
    item3.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemHistory tag:300];
    [marrOfVCs addObject:item3];
    
    
    // UIAppearance 全局设置
    [[UITabBar appearance] setTintColor:[UIColor yellowColor]];
    
    [[UITabBar appearance] setBarTintColor:[UIColor blackColor]];
    [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}];
    
    
    
    return marrOfVCs;
}



- (void)applicationWillResignActive:(UIApplication *)application {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end
